Assessment the risk of impact of waste treatment ce nter on groundwater quality in Oum Azza (Rabat, Morocco).
2014
Water quality is very essential to human health. And, Groundwater quality assessment is necessary to guarantee sustainable safe use of water. H ence, in the region of study of Oum Azza, the presence the waste center treatment it could alter the quality of groundwater. In the present pa per, hydrochemical, geochemical and multivariate st atistical were used to assess the impact of waste treatment center Oum Azza on groundwater quality. Q-mode hierarchical clust er analysis (HCA) based on major ion contents and hydrochemical facie s; defined three main chemical water types. The fir st, group 1, has low salinity (mean EC=813µS/cm) and abundance orders Ca 2+ > Na + >Mg 2+ >K + and HCO 3 - >Cl - >NO 3 - >. With increased waterrock interaction, waters in group 2and 3 become mor e saline, changing composition towards Cl-Ca-Mg and HCO 3 - Na + Mg 2+ . The principal component analysis (PCA) revealed, on part of the existence of phenomena governing groundwater mineralization particular, the water-rock interacti on . And another part a tendency to nitrogen pollution local ized at collected well water. These results contribute to a better un derstanding of the hydrochemical properties of grou ndwater in the area of study.
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